`chapter04.tex` L87: Camera poses can construct the special orthogonal group $SO(3)$ and special euclidean group $SE(3)$ defined as follows: define 前面不用加逗號 L99: However, $SO(3)$ does not have closure property under addition, which means that the addition of two rotation matrices is not a rotation matrix. which 前面加逗號 L105-111: 可以提一下 $t$ 是甚麼 這裡的各個是式子比較沒有那麼重要,是不是可以用 ``` \begin{align} & R(t) R(t)^{T} = I. \implies & \dot{R}(t) R(t)^{T} + R(t) \dot{R}(t)^{T} = 0. \implies & \dot{R}(t) R(t)^{T} = -\bigg(\dot{R}(t) R(t)^{T}\bigg)^{T}. \end{align} ``` 另外 $\dot{R}(t)$ 是指對這個矩陣作微分嗎,沒看過這種 notation @@ L137: 可以提一下 $J_l$ 跟 $J_r$ 的物理意義,不然不知道這兩個函數怎麼跑出來的 有些 ^ 符號是甚麼意思,例如 ![](https://i.imgur.com/bkPHwOS.png) ![](https://i.imgur.com/Z6Ob64y.png) 是 `\hat{}` $\hat{R_p}$ 嗎